The BGP Instability Report

The BGP Instability Report is updated daily. This report
was generated on 27 January 2012 06:14 (UTC+1000)

50 Most active ASes for the past 7 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	8402	53911	3.05%	1945	27.72	CORBINA-AS OJSC "Vimpelcom"
2	28683	46880	2.65%	61	768.52	BENINTELECOM
3	12322	33500	1.90%	8795	3.81	PROXAD Free SAS
4	9829	27354	1.55%	1167	23.44	BSNL-NIB National Internet Backbone
5	12479	25908	1.47%	593	43.69	UNI2-AS France Telecom Espana SA
6	5800	25435	1.44%	290	87.71	DNIC-ASBLK-05800-06055 - DoD Network Information Center
7	7029	24866	1.41%	4822	5.16	WINDSTREAM - Windstream Communications Inc
8	24560	24520	1.39%	1015	24.16	AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
9	32528	23709	1.34%	10	2370.90	ABBOTT Abbot Labs
10	15706	23091	1.31%	329	70.19	Sudatel
11	3352	22988	1.30%	241	95.39	TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
12	20632	20400	1.15%	41	497.56	PETERSTAR-AS PeterStar
13	8151	19453	1.10%	1483	13.12	Uninet S.A. de C.V.
14	37004	15152	0.86%	29	522.48	SUBURBAN-AS
15	17639	13254	0.75%	92	144.07	COMCLARK-AS ComClark Network & Technology Corp.
16	6066	13135	0.74%	2	6567.50	VERIZON-BUSINESS-MAE-AS6066 - Verizon Business Network Services Inc.
17	10201	11899	0.67%	335	35.52	DWL-AS-IN Dishnet Wireless Limited. Broadband Wireless
18	5976	10180	0.58%	99	102.83	DNIC-ASBLK-05800-06055 - DoD Network Information Center
19	27947	10127	0.57%	654	15.48	Telconet S.A
20	19223	10049	0.57%	3	3349.67	NTEGRATED-SOLUTIONS - Ntegrated Solutions
21	2856	9948	0.56%	188	52.91	BT-UK-AS BTnet UK Regional network
22	6072	9926	0.56%	17	583.88	UNISYS-6072 For routing issues, email hostmaster@unisys.com
23	47331	9820	0.56%	2451	4.01	TTNET TTNet A.S.
24	6713	9691	0.55%	531	18.25	IAM-AS
25	26640	9629	0.55%	217	44.37	2901 - Oso Grande Technologies, Inc.
26	30890	8836	0.50%	356	24.82	EVOLVA EUROLAN SOLUTIONS SRL
27	31148	7768	0.44%	663	11.72	FREENET-AS FreeNet ISP
28	9498	7368	0.42%	886	8.32	BBIL-AP BHARTI Airtel Ltd.
29	5400	7333	0.42%	102	71.89	BT BT European Backbone
30	2118	7263	0.41%	1241	5.85	RELCOM-AS OOO "NPO Relcom"
31	34875	7245	0.41%	186	38.95	YANFES OJSC "Uralsviazinform"
32	34145	7050	0.40%	55	128.18	TOMTEL LLC TOMTEL
33	26341	6942	0.39%	2	3471.00	OSI-ASP - Open Solutions Inc.
34	5434	6645	0.38%	128	51.91	NURSAT-ALA-AS Nursat-Almaty
35	30902	6242	0.35%	58	107.62	NEDA-AS neda rayaneh
36	9318	6160	0.35%	223	27.62	HANARO-AS Hanaro Telecom Inc.
37	14522	6099	0.35%	476	12.81	Satnet
38	43348	6064	0.34%	132	45.94	TATARINOVA-AS PE Tatarinova Alla Ivanovna
39	23154	5955	0.34%	6	992.50	SANMINA-SCI Sanmina-SCI Corporation
40	7315	5906	0.33%	71	83.18	COLOMBIA TELECOMUNICACIONES S.A. ESP
41	34364	5880	0.33%	27	217.78	TNEFT-AS OJSC Tatneft W.D.Shashin
42	11492	5870	0.33%	1156	5.08	CABLEONE - CABLE ONE, INC.
43	45514	5810	0.33%	304	19.11	TELEMEDIA-SMB-AS-AP Bharti Airtel Ltd., TELEMEDIA Services, for SMB customers
44	27738	5760	0.33%	341	16.89	Ecuadortelecom S.A.
45	1273	5696	0.32%	285	19.99	CW Cable and Wireless Worldwide plc
46	45595	5647	0.32%	372	15.18	PKTELECOM-AS-PK Pakistan Telecom Company Limited
47	9394	5483	0.31%	1588	3.45	CRNET CHINA RAILWAY Internet(CRNET)
48	3475	5128	0.29%	64	80.12	DNIC-AS-03475 - Navy Network Information Center (NNIC)
49	10620	4951	0.28%	1729	2.86	Telmex Colombia S.A.
50	7552	4948	0.28%	1424	3.47	VIETEL-AS-AP Vietel Corporation
Total		662874	37.53%

50 Most active ASes for the past 7 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	32528	11854.5	1.34%	10	23709	ABBOTT Abbot Labs
2	19223	10049.0	0.57%	3	10049	NTEGRATED-SOLUTIONS - Ntegrated Solutions
3	6066	6567.5	0.74%	2	13135	VERIZON-BUSINESS-MAE-AS6066 - Verizon Business Network Services Inc.
4	27295	4839.0	0.27%	3	4839	GENICA - Genica Corporation
5	10209	3831.0	0.22%	3	3831	SYNOPSYS-AS-JP-AP Japan HUB and Data Center
6	26341	3471.0	0.39%	2	6942	OSI-ASP - Open Solutions Inc.
7	17408	3112.0	0.18%	38	3112	ABOVE-AS-AP AboveNet Communications Taiwan
8	65273	2447.0	0.14%	1	2447	-Private Use AS-
9	53360	2154.0	0.24%	2	4308	CUMULUS - Integral Solutions Group
10	17639	1656.8	0.75%	92	13254	COMCLARK-AS ComClark Network & Technology Corp.
11	23154	1488.8	0.34%	6	5955	SANMINA-SCI Sanmina-SCI Corporation
12	53362	974.0	0.06%	1	974	MIXIT-AS - Mixit, Inc.
13	3352	851.4	1.30%	241	22988	TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
14	51825	833.4	0.24%	9	4167	TELZAR-ASN TELZAR INTERNATIONAL TELECOMINICATIONS LTD
15	26678	824.0	0.05%	1	824	ASN-QMFI - QUINCY MUTUAL FIRE INSURANCE, CO.
16	8360	772.0	0.09%	2	1544	Allianz Shared Infrastructure Services SE
17	28683	768.5	2.65%	61	46880	BENINTELECOM
18	6072	709.0	0.56%	17	9926	UNISYS-6072 For routing issues, email hostmaster@unisys.com
19	17370	658.0	0.04%	7	658	MCAFEE-COM - McAfee, Inc.
20	20632	637.5	1.15%	41	20400	PETERSTAR-AS PeterStar
21	21324	635.0	0.04%	1	635	OSW Osrodek Studiow Wschodnich im Marka Karpia
22	37296	622.0	0.04%	1	622	AFCOMSAT
23	27508	612.5	0.07%	2	1225	TRDLNK - TradeLink, LLC
24	36980	602.0	0.03%	1	602	JOHNHOLT-ASN
25	37005	585.0	0.03%	1	585	ACCESSBK-AS
26	37004	522.5	0.86%	29	15152	SUBURBAN-AS
27	37136	498.7	0.08%	3	1496	ETISALAT-AS
28	31465	478.0	0.03%	1	478	ALMA-MEDIA-REGIONS-AS Alma-Media Autonomous System for Regions
29	57405	448.0	0.05%	2	896	MIHAN-NOC2 MIHAN COMMUNICATION SYSTEMS CO.,LTD
30	5413	438.0	0.02%	43	438	AS5413 Daisy Communications Ltd
31	19226	436.0	0.02%	1	436	AURA-SOUTH - A.U.R.A
32	48068	426.0	0.02%	3	426	VISONIC Visonic Ltd
33	8153	421.5	0.14%	20	2529	NORTEL-NETWORKS NORTEL NETWORKS SA
34	6331	404.0	0.02%	1	404	AIT-NET - Atlantic Internet Technologies, Inc.
35	52231	371.0	0.04%	2	742	DTH Television and Telecommunication N.V.
36	38219	368.0	0.02%	1	368	SKODAAUTOINDIA-AS-AP Skoda Auto India Pvt.Ltd.
37	36957	364.2	0.10%	5	1821	MICROACCESS
38	36174	364.0	0.02%	1	364	BAPTISTHEALTH - Baptist Health System
39	22386	337.5	0.04%	2	675	SARB
40	56886	324.0	0.02%	1	324	REDSTAR-AS OOO "Red Star"
41	14240	300.0	0.03%	5	600	PMC-AS-1 - PMC-Sierra, INC.
42	15290	284.7	0.05%	361	854	ALLST-15290 - Allstream Corp.
43	5313	284.0	0.02%	1	284	DNIC-ASBLK-05120-05376 - DoD Network Information Center
44	2	278.0	0.02%	1	278	DCN-AS - University of Delaware
45	46022	273.0	0.03%	2	546	ELNUSA-AS-ID PT. Elnusa TBK
46	41739	261.0	0.01%	3	261	MOESA Ministry of Education
47	19515	260.0	0.01%	14	260	ORICOM-QUEBEC1 - Oricom Internet
48	56687	253.0	0.01%	1	253	NIMADNET Nimad Rah Khoozestan PLC
49	46904	251.0	0.01%	1	251	WEITZ-LUX - Weitz & Luxenberg P.C
50	4	249.7	0.04%
Total		70450.7	13.24%

50 Most active Prefixes for the past 7 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	84.204.132.0/24	20259	1.07%	20632 -- PETERSTAR-AS PeterStar
2	130.36.34.0/24	11855	0.62%	32528 -- ABBOTT Abbot Labs
3	130.36.35.0/24	11854	0.62%	32528 -- ABBOTT Abbot Labs
4	122.161.0.0/16	10282	0.54%	24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
5	67.97.156.0/24	10049	0.53%	19223 -- NTEGRATED-SOLUTIONS - Ntegrated Solutions
6	62.36.252.0/22	7791	0.41%	12479 -- UNI2-AS France Telecom Espana SA
7	63.94.193.0/24	6933	0.36%	26341 -- OSI-ASP - Open Solutions Inc.
8	111.125.126.0/24	6601	0.35%	17639 -- COMCLARK-AS ComClark Network & Technology Corp.
9	150.225.0.0/16	6568	0.35%	6066 -- VERIZON-BUSINESS-MAE-AS6066 - Verizon Business Network Services Inc.
10	204.29.239.0/24	6567	0.35%	6066 -- VERIZON-BUSINESS-MAE-AS6066 - Verizon Business Network Services Inc.
11	148.164.14.0/24	5894	0.31%	23154 -- SANMINA-SCI Sanmina-SCI Corporation
12	62.36.249.0/24	5891	0.31%	12479 -- UNI2-AS France Telecom Espana SA
13	194.63.9.0/24	5527	0.29%	1273 -- CW Cable and Wireless Worldwide plc
14	202.92.235.0/24	5349	0.28%	9498 -- BBIL-AP BHARTI Airtel Ltd.
15	62.36.241.0/24	5326	0.28%	12479 -- UNI2-AS France Telecom Espana SA
16	62.36.210.0/24	5114	0.27%	12479 -- UNI2-AS France Telecom Espana SA
17	12.202.99.0/24	4839	0.25%	27295 -- GENICA - Genica Corporation
18	182.64.0.0/16	4648	0.24%	24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
19	205.73.118.0/24	4014	0.21%	5976 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center
20	205.73.116.0/23	3960	0.21%	5976 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center
21	198.182.50.0/23	3831	0.20%	10209 -- SYNOPSYS-AS-JP-AP Japan HUB and Data Center
22	202.56.215.0/24	3379	0.18%	24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
23	204.234.0.0/17	3253	0.17%	7029 -- WINDSTREAM - Windstream Communications Inc
24	202.153.174.0/24	3112	0.16%	17408 -- ABOVE-AS-AP AboveNet Communications Taiwan
25	200.4.130.0/23	3006	0.16%	8151 -- Uninet S.A. de C.V.
26	200.4.128.0/24	2995	0.16%	8151 -- Uninet S.A. de C.V.
27	209.54.139.0/24	2447	0.13%	65273 -- -Private Use AS-
28	115.170.128.0/17	2328	0.12%	4847 -- CNIX-AP China Networks Inter-Exchange
29	46.31.98.0/24	2298	0.12%	51825 -- TELZAR-ASN TELZAR INTERNATIONAL TELECOMINICATIONS LTD
30	12.131.100.0/23	2154	0.11%	53360 -- CUMULUS - Integral Solutions Group
31	74.121.108.0/22	2154	0.11%	53360 -- CUMULUS - Integral Solutions Group
32	148.247.197.0/24	1977	0.10%	8151 -- Uninet S.A. de C.V.
33	46.31.99.0/24	1862	0.10%	51825 -- TELZAR-ASN TELZAR INTERNATIONAL TELECOMINICATIONS LTD
34	121.58.240.0/24	1646	0.09%	17639 -- COMCLARK-AS ComClark Network & Technology Corp.
35	121.58.241.0/24	1646	0.09%	17639 -- COMCLARK-AS ComClark Network & Technology Corp.
36	121.58.242.0/24	1646	0.09%	17639 -- COMCLARK-AS ComClark Network & Technology Corp.
37	121.58.243.0/24	1644	0.09%	17639 -- COMCLARK-AS ComClark Network & Technology Corp.
38	215.65.61.0/24	1605	0.08%	5800 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center
39	112.215.36.0/24	1568	0.08%	24203 -- NAPXLNET-AS-ID PT Excelcomindo Pratama (Network Access Provider)
40	131.148.0.0/16	1506	0.08%	8153 -- NORTEL-NETWORKS NORTEL NETWORKS SA
41	208.54.82.0/24	1476	0.08%	701 -- UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
42	203.34.2.0/24	1307	0.07%	4802 -- ASN-IINET iiNet Limited
43	131.149.0.0/16	1254	0.07%	7099 -- NORTELRCH - NORTEL 8153 -- NORTEL-NETWORKS NORTEL NETWORKS SA
44	81.47.222.0/24	1199	0.06%	3352 -- TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
45	81.45.3.0/24	1197	0.06%	3352 -- TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
46	81.47.223.0/24	1192	0.06%	3352 -- TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
47	80.58.102.0/23	1175	0.06%	3352 -- TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
48	205.104.208.0/20	1162	0.06%	3475 -- DNIC-AS-03475 - Navy Network Information Center (NNIC)
49	80.58.104.0/24	1148	0.06%	3352 -- TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
50	80.58.29.0/24	1146	0.06%	3352 -- TELEFONICA-DATA-ESPANA TELEFONICA DE ESPANA
Total		207634	10.91%

7 Day BGP Profile: 20-January-2012 00:00 - 26-January-2012 23:59 (UTC+1000)

Number of BGP Update Messages:	873284
Number of Prefix Updates:	1766751
Number of Prefix Withdrawals:	134448
Average Prefixes per BGP Update:	2.18
Average BGP Update Messages per second:	1.26
Average Prefix Updates per second:	2.75
Peak BGP Update Message Rate per second:	1223	(06:38:47 Sat, 21-Jan-2012)
Peak Prefix Update Rate per second:	4706	(14:42:32 Sat, 21-Jan-2012)
Peak Prefix Withdraw Rate per second:	8033	(14:41:47 Sat, 21-Jan-2012)
Prefix Count:	415845
Updated Prefix Count:	180473
Stable Prefix Count:	235372
Origin AS Count:	40072
Updated Origin AS Count:	22018
Stable Origin AS Count:	18054
Unique Path Count:	202162
Updated Path Count:	125820
Stable Path Count:	76342

Hourly Average of Per-Second Updated and Withdrawn Prefix Rate

Hourly Peak of Per-Second Updated and Withdrawn Prefix Rate

Hourly Average Per-Second Updated Prefix Rate by Update Type

Hourly Peak of Per-Second Updated Prefix Rate by Update Type

BGP Table Activity

Cumulative Distribution of per-Prefix and per-AS Updates

Notes

The data has been gathered using a single eBGP peering with AS 131072. The observations of BGP path change are relative to this observation point. The updates are generated by a Quagga BGP implementation providing a timestamped log of incoming update messages. The timezone of this monitoring point is UTC+1000. Updates are processed on a 24 hour cycle.